Swimming Pace per 100 m
Computes swimming pace in min/100m and average speed from time and distance.
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How 100 m swim pace works
Swim pace tells you how long it takes to cover 100 m. The math is pace = (total_time / distance) × 100. For freestyle, most swimmers land somewhere in these ranges: recreational 2:00–2:30 / 100 m, intermediate 1:30–1:50, advanced 1:15–1:25, with world elite under 1:00. There's a related number worth tracking too, SWOLF (lap time + strokes per lap), where a lower score means you're getting more out of each stroke.
Example: 1500 m in 30:00 → (1800 / 1500) × 100 = 2:00 / 100 m.
Applications
Pool sessions, triathlon prep (Ironman 3.8 km, Olympic 1.5 km, Sprint 750 m), masters meets, and the pace figures you see in Strava swim activities or on a Garmin or Apple Watch.
FAQ
Why per 100 m? It's the swimming standard everyone uses, and it holds up whether your pool is 25 m or 50 m and no matter how long the race is.
Does freestyle pace match other strokes? Not really. Backstroke runs about 8–12% slower, breaststroke 15–25% slower, and butterfly isn't something you can hold past short sprints.
Pool vs open water? Expect open water to come in 5–15% slower. You lose the wall push-offs, and you have to deal with sighting, chop, and wetsuit drag.
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The results provided by this tool are for general informational and educational purposes only and do not constitute professional, financial, medical, legal, tax or accounting advice. Always confirm important decisions with a qualified professional and official sources.